1, temperature crack-the most common building crack, which has little influence on the structural safety of buildings. This kind of crack only affects the indoor beauty of the building and will not affect the safety of the building. Some remedial measures can be taken appropriately: stick non-woven fabric, PVC grid cloth or mortar to block the cracks, and then paint and repair them.
2. Settlement cracks-When the settlement develops slowly and tends to weaken after the settlement cracks occur, they should be repaired after the cracks are stabilized. The foundation of new houses will be gradually stabilized in 2-5 years. After the cracks are repaired, the wall may still crack due to the settlement of the foundation, so don't worry too much. If the cracks have little effect on the overall beauty of the house, they can be repaired after the first repair. Repairs are generally filled with cement mortar, polymer mortar or elastic putty and gypsum, and glued with caulking tape.
3, structural cracks-ordinary decoration methods can not be repaired, we must find professional building structural personnel according to the actual situation, and take corresponding measures.
4. There are cracks in the surface latex paint wallpaper: If there are only cracks in the surface paint film, polish the cracks with fine sandpaper and repaint them. If the wallpaper cracks at the joint, moisten it with warm water, and then paste it with wallpaper glue.
5. Cracks in the plastering layer of cement mortar: If there is a large area of hollowing in the plastering layer, the original plastering layer should be knocked off and a new plastering layer of cement mortar should be made. After leveling, paste paint or wallpaper according to normal procedures. However, after this treatment, the cost will increase relatively, and the owner can choose the repair method according to his own economic ability. If it only cracks in a large area and there is no sand turning, hollowing and falling off, you can paste dacron cloth all over the wall, and then paint or wallpaper it according to the normal process. The relatively low-cost way is to directly nail a layer of gypsum board on the original wall, which requires environmental protection white latex and steel nails to be used at the same time.